Eurybia wasatchensis

Eurybia wasatchensis is a North American species of flowering plants in the family Asteraceae, called the Wasatch aster. It has been found only in the state of Utah in the western United States.

Eurybia wasatchensis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Eurybia
Species:
E. wasatchensis
Binomial name
Eurybia wasatchensis
Synonyms[1]
  • Aster glaucus var. wasatchensis M.E.Jones
  • Aster wasatchensis (M.E.Jones) S.F.Blake
  • Eucephalus wasatchensis (M.E.Jones) Rydb.
  • Herrickia wasatchensis (M.E.Jones) Brouillet

Eurybia wasatchensis is a perennial herb up to 60 centimeters (2 feet) tall from a woody underground caudex. The plant produces flower heads in groups of 2-20 or more heads. Each head contains 13–21 white or pink ray florets surrounding 26–43 yellow disc florets.[2]

Taxonomy

Eurybia wasatchensis was first described and named as a subspecies, Aster glaucus var. wasatchensis, by Marcus E. Jones in 1895.[1] Further study by the famous botanist Per Axel Rydberg lead to him publish a book where it was classified as a species with the name Eucephalus wasatchensis in 1917. Eight years later Sidney Fay Blake wrote in favor of its inclusion in the large Aster genus.[1] In 2004 Luc Brouillet published a paper arguing for its being renamed Herrickia horrida along with a general reorganization of three other species into a restored genus, Herrickia.[3] This is the classification used in the Flora of North America.[4] However, as of 2023 Plants of the World Online (POWO) and the USDA Natural Resources Conservation Service PLANTS database (PLANTS) accept the 1995 description by Guy L. Nesom as Eurybia wasatchensis.[5][1][6]

Range

Though it has sometimes been reported from the state of Arizona, POWO and PLANTS both report it is endemic to the state of Utah.[7][1][6]

References
  1. "Eurybia wasatchensis (M.E.Jones) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 August 2023.
  2. Flora of north America, Herrickia wasatchensis (M. E. Jones) Brouillet, 2004. Wasatch aster
  3. Brouillet, Luc; Urbatsch, Lowell; Roberts, R. P. (2004). "Tonestus kingii and T. Aberrans are Related to Eurybia and the Machaerantherinae (Asteraceae: Astereae) Based on nrDNA (ITS and ETS) Data: Reinstatement of Herrickia and a New Genus, Triniteurybia". SIDA, Contributions to Botany. 21: 897. ISSN 0036-1488. Retrieved 19 August 2023.
  4. Brouillet, Luc (5 November 2020). " Herrickia wasatchensis - FNA". Flora of North America. Retrieved 21 August 2023.
  5. Nesom, Guy L. (2009). "Taxonomic Overview of Eerybia Sect. Herrickia (Asteraceae: Astereae)" (PDF). Journal of the Botanical Research Institute of Texas. 3: 161–167. ISSN 1934-5259. Retrieved 19 August 2023.
  6. Eurybia wasatchensis, USDA Natural Resources Conservation Service PLANTS Profile, 21 August 2023
  7. Biota of North America Program 2014 county distribution map, Herrickia wasatchensis
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